Here's a handy reference for n00bs:

This Is Not How You Properly Capitalize A Sentence.
NOR IS THIS THE RIGHT WAY TO CAPITALIZE YOUR SENTENCES!
this is not a properly capitalized sentence either.
This, however, is a properly capitalized sentence.

To go with this post, http://angryflower.com/aposter.html

Heh...

It's is not, it isn't ain't, and it's it's, not its, if you mean it
is. If you don't, it's its. Then too, it's hers. It isn't her's. It
isn't our's either. It's ours, and likewise yours and theirs.
-- Oxford University Press, Edpress News

Also useful capitalization:

I helped my uncle jack off a horse.
I helped my uncle Jack off a horse.

don't forget spaces...

a space is the difference between
therapist and
the rapist.

Also, always proofread carefully to make sure you don't a word out.

POLISH is a word in the English language where capitalization changes the pronounciation.

Watch the Polish Pole polish a pole. Hurrah! :P

hehe. Polish Polishers, Inc.

enough Poland bashing.

Ah Celkan, belgium, man, BELGIUM!!

hhgttg